Journal article
Evidence of Magnetic Reconnection in Ganymede's Wake Region From Juno
Journal of geophysical research. Space physics, Vol.129(12), p.e2024JA033173
12/2024
DOI: 10.1029/2024JA033173
PMCID: PMC11602183
PMID: 39610803
Appears in UI Libraries Support Open Access
Abstract
Magnetic reconnection has been commonly reported between the solar wind IMF and the magnetic field of Earth and other planets. A similar phenomenon is expected between Jupiter's magnetosphere and Ganymede's mini magnetosphere inside the Jovian magnetosphere. This article is the first report of a reconnection event in the tail region of Ganymede. We present compelling evidence that Juno flew in close proximity to an X-line, that was not within the tail current sheet, but rather in the turbulent wake area of Ganymede. We report the observation of distinctive electron Bernstein mode waves with unique characteristics particular to a separatrix region of the reconnection site. We detect a clear reversal of a magnetic field component. Electron densities and pitch angle distributions also indicate that Juno possibly traversed the inflow, and outflow region surrounding the separatrix region. Finally, from the time sequence of the observations by the different instruments on Juno, we reconstruct a likely trajectory of Juno around the reconnection site.
Details
- Title: Subtitle
- Evidence of Magnetic Reconnection in Ganymede's Wake Region From Juno
- Creators
- Jayasri Joseph - University of Iowa, Physics and AstronomyW S Kurth - University of Iowa, Physics and AstronomyA H Sulaiman - University of Iowa, Physics and AstronomyJ E P Connerney - Goddard Space Flight CenterF Allegrini - Southwest Research InstituteS Duling - University of CologneG Clark - Johns Hopkins University Applied Physics LaboratoryJ B Faden - University of IowaC W Piker - University of IowaA N Jaynes - University of Iowa, Physics and AstronomyB H Mauk - Johns Hopkins University Applied Physics LaboratoryS J Bolton - Southwest Research Institute
- Resource Type
- Journal article
- Publication Details
- Journal of geophysical research. Space physics, Vol.129(12), p.e2024JA033173
- DOI
- 10.1029/2024JA033173
- PMID
- 39610803
- PMCID
- PMC11602183
- NLM abbreviation
- J Geophys Res Space Phys
- ISSN
- 2169-9380
- eISSN
- 2169-9402
- Publisher
- Wiley
- Grant note
- European Research Council: 699041X NASA: 884711 European Research Council (ERC) under the European Union's Horizon2020 research and innovation programRoy J. Carver Charitable Trust
The research at the University of Iowa is supported by NASA through Contract 699041X with Southwest Research Institute. S.D. has received funding from the European Research Council (ERC) under the European Union's Horizon2020 research and innovation program (Grant agreement No. 884711). We acknowledge the use of the Space Physics Data Repository at the University of Iowa supported by the Roy J. Carver Charitable Trust. Figure 5b used in this article is reprinted from Li et al. (2020) (Figure 4f) published in "Nature Communications" under a Creative Commons license.
- Language
- English
- Date published
- 12/2024
- Academic Unit
- Physics and Astronomy; University College Courses
- Record Identifier
- 9984751955302771
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